[foh-toh-dahy-ohd] /ˈfoʊ toʊˌdaɪ oʊd/

noun, Electronics.
a photosensitive semiconductor .
a semiconductor diode, the conductivity of which is controlled by incident illumination
A diode that exhibits sensitivity to light, either by varying its electrical resistance like a photoresistor, or generating a electric potential in the manner of a photoelectric cell. See more at photoelectric.


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